Biology Reference
In-Depth Information
R
OT
, Storage. Centrospora
acerina, NY;
Celery, Celeriac (Apium graveolens)
Typhula
variabilis, NY;
Tricothecium
roseum, pink mold, NY.
S
LIME
M
OLD
. Physarum spp., CA.
V
IRUS
. Celery Calico, CA, FL, NY, OH; Celery
Mosaic, AL, CA, FL,WA; Cucumber
Mosaic; Beet Curly Top, OR; Celery Yellow
Spot, CA; Tomato Spotted Wilt; Lettuce
Mosaic, NY; Broad Bean Wilt, NY; Apium
Virus Y, CA, WA; Potyvirus, CA.
W
ILT
, Yellows. Fusarium oxysporum f. sp. apii,
CA, MI, NY, TX, general.
W
ILT
. Verticillium albo-atrum, CA.
In many areas soil treatment for nematodes
increases yield. Yellows-resistant varieties are
on the market. Seed should be treated for leaf
blights unless more than 2 years old. In Florida,
development of apothecia of
Sclerotinia
is
inhibited by flooding fields. Western growers
fight mosaic by celery-free periods and by con-
trolling insect vectors.
B
ACTERIAL
Leaf Spot. Pseudomonas jaggeri pv.
apii, CT, DE, FL, IN, MI, MN, ND, NY, OH;
Leaf Blight, P. cichorii, FL; Pseudomonas
syringae pv. apii, CA.
B
ACTERIAL
, MLO. California Aster Yellows,
CA, ID, UT, WA.
B
ACTERIAL
Soft Rot. Erwinia carotovora,
cosmopolitan.
B
LIGHT
, Early. Cercospora apii, general.
B
LIGHT
, Late. Septoria apiicola (includes
S. apii
large leaf spot, and
S. apii-graveolentis
),
general.
D
AMPING
-O
FF
. Pythium mastophorum, CA;
Pythium spp.; Rhizoctonia solani;
Aphanomyces euteiches, cosmopolitan.
L
EAF
S
POT
. Phyllosticta
apii, DE, NJ;
Stemphylium sp.
and Alternaria
sp.,
secondary.
N
EMATODE
, Awl. Dolichodorus heterocephalus,
red root, FL.
N
EMATODE
, Pin. Paratylenchus hamatus, New
England, CA; P. projectus, NJ.
N
EMATODE
, Root Knot. Meloidogyne incognita.
N
EMATODE
, Sheath. Hemicycliophora parvana,
FL.
N
EMATODE
, Stem. Ditylenchus dipsaci, CA.
N
EMATODE
, Sting. Belonolaimus gracilis, FL;
B. longicaudatus.
N
EMATODE
, Stubby Root. Paratrichodorus
christiei.
N
ONPARASITIC
. Black Heart. Wide fluctuations of
soil moisture, general.
Brown Stem. Over-age plants.
Cracked Stem. Boron deficiency.
Hollow Stem. Pithiness. Sometimes chilling;
sometimes genetic.
P
OWDERY
M
ILDEW
. Erysiphe heraclei, CA.
R
OT
,GrayMold.Botrytis cinerea,cosmopolitan.
R
OT
, Petiole and Crown. Sclerotinia minor,CA.
R
OT
, Pink; Watery Soft. Sclerotinia sclerotiorum,
general; S. intermedia; S. minor.
R
OT
, Root; Scab on celeriac. Phoma apiicola,
CA, MI, NY, OH, WI.
R
OT
, Stem; Brown Spot. Cephalosporium apii,
CA.
Celtuce (Lactuca serriota var. sativa)
D
OWNY
M
ILDEW
. Bremia lactucae, ND, PA, WA.
L
EAF
S
POT
. Septoria lactucae.
R
OT
, Watery
Soft;
Drop.
Sclerotinia
sclerotiorum, MA.
Celtuce is a kind of lettuce and subject to some
of the same diseases.
Cenchrus (Buffelgrass)
B
LIGHT
. Pyricularia grisea, TX.
Centaurea (Bachelors-Button,
Basketflower, Cornflower,
Dusty-miller, Yellow Starthistle)
B
ACTERIAL
, MLO. Aster Yellows, widespread;
California Aster Yellows, CA.
B
LIGHT
, Southern. Sclerotium rolfsii, CT, MD,
NJ, TX.
C
ROWN
G
ALL
. Agrobacterum rhizogenes, OR.
D
IEBACK
, Stem. Pseudomonas syringae, MT.
